Table 1.
Summary of VOC exposure concentrations and HRV parameters for patients and controls.
| Parameters | Patients | Controls c | p d | ||
|---|---|---|---|---|---|
| n a | Mean ± SD b | n | Mean ± SD | ||
| VOC exposure concentration (µg·m−3) | |||||
| Total | 8 | 306 ± 148 | 7 | 176 ± 130 | 0.12 |
| Home | 8 | 262 ± 204 | 7 | 299 ± 267 | 1.00 |
| HRV parameters | |||||
| Log10HF (m·sec2) | 8 | 1.5 ± 0.2 | 7 | 1.7 ± 0.4 | 0.34 |
| LF/HF | 8 | 3.8 ± 1.9 | 7 | 3.8 ± 2.2 e | 1.00 |
a Sample size; b Standard deviation; c Data from a previous study [18]; d Wilcoxon non-parametric test; e LF/HF was calculated using LF and HF averaged over 5-min intervals.